[PATCH] kasan: also display registers for reports from HW exceptions

[kernel test robot]

Hi Peter,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on next-20220909]
[cannot apply to arm64/for-next/core linus/master v6.0-rc4 v6.0-rc3 v6.0-rc2 v6.0-rc4]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Peter-Collingbourne/kasan-also-display-registers-for-reports-from-HW-exceptions/20220910-132721
base:    9a82ccda91ed2b40619cb3c10d446ae1f97bab6e
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220910/202209101733.SvgcwWsA-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/2140392d32582f62b922eaf4d1824e5a7838b420
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Peter-Collingbourne/kasan-also-display-registers-for-reports-from-HW-exceptions/20220910-132721
        git checkout 2140392d32582f62b922eaf4d1824e5a7838b420
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> mm/kasan/report.c:506:6: warning: no previous prototype for 'kasan_report_regs' [-Wmissing-prototypes]
     506 | bool kasan_report_regs(unsigned long addr, size_t size, bool is_write,
         |      ^~~~~~~~~~~~~~~~~


vim +/kasan_report_regs +506 mm/kasan/report.c

   505	
 > 506	bool kasan_report_regs(unsigned long addr, size_t size, bool is_write,
   507			       struct pt_regs *regs)
   508	{
   509		return __kasan_report(addr, size, is_write, instruction_pointer(regs),
   510				      regs);
   511	}
   512	

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